suck it up or take a hike from a Mc Donald's manag

I bought a McFlurry Mud Pie ice cream and it was so dry you could swear it was just a plain Oreo. I humbly requested that the chocolate that we paid extra for to be added so taste would be as good as we are used to buying. All hell broke loose when the manager told us with a very stinking attitude that if we don't want what we got then too bad because that's a procedure or else she'll give us our money back. She then threw the Ice cream on the counter and went to the back. We demanded to see her as she is the manager and she came back after some time and put the money on the counter and just left us like we were not even there, like we were nuisances and when we demanded to contact her manager or the owner of the franchise she refused. What we wanted was the ice cream that we are used to buying all the time without any complications but instead we were left with regret for ever going close to McD.